78240320

素因数分解:

$2^6\times 5^1\times {\mathrm{139}}^1\times {\mathrm{1759}}^1$

素因数の和:1915

約数の個数: 56

約数和(自身を含む): 187756800

約数和(自身を除く): 109516480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 139, 160, 278, 320, 556, 695, 1112, 1390, 1759, 2224, 2780, 3518, 4448, 5560, 7036, 8795, 8896, 11120, 14072, 17590, 22240, 28144, 35180, 44480, 56288, 70360, 112576, 140720, 244501, 281440, 489002, 562880, 978004, 1222505, 1956008, 2445010, 3912016, 4890020, 7824032, 9780040, 15648064, 19560080, 39120160, 78240320]

約数ペア:

[(1, 78240320), (2, 39120160), (4, 19560080), (5, 15648064), (8, 9780040), (10, 7824032), (16, 4890020), (20, 3912016), (32, 2445010), (40, 1956008), (64, 1222505), (80, 978004), (139, 562880), (160, 489002), (278, 281440), (320, 244501), (556, 140720), (695, 112576), (1112, 70360), (1390, 56288), (1759, 44480), (2224, 35180), (2780, 28144), (3518, 22240), (4448, 17590), (5560, 14072), (7036, 11120), (8795, 8896)]